Ok, I'll be serious now
Promise.
A wipe down after every session is a good idea. Camellia oil is one very common, albeit pricey wipe oil for planes (and other metal tools).
I'm a fan of the Chris Schawrz Woobie approach. I keep a rag in a sealed jar with some sort of light oil. Marvel Mystery Oil, WD40, ATF etc. I wipe down a metal tool after use. Then store the tool in a sock or box or wrap in a towel. Something to keep it protected.
Or a WD40 aerosol spray is good too.
If you leave a tool out in the open, dust and moisture will settle on the tool, rusting it.
I don't think wax offers very good moisture protection for planes. I view it more for sole lubrication during use.
You may wish to apply a few coats of shellac to the parts of the plane. Other than the sole, this would help protect it from your hands.
But, a wipe/spray down is still advisable.
I didn't mention Potato Water at all!
Jim